Electrostatic latent image developing toner
AssigneeKYOCERA Document Solutions Inc.
InventorMasami TSUJIHIRO
Life of this patent
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Abstract
A toner contains a plurality of toner particles each including a core and a shell layer disposed over a surface of the core. The core contains a binder resin. The shell layer is substantially formed from a resin having at least one repeating unit including an alcoholic hydroxyl group (specific examples include a repeating unit derived from 2-hydroxyethyl acrylate, 2-hydroxy propyl acrylate, 2-hydroxyethyl methacrylate, and 2-hydroxy propyl methacrylate). A ratio of the repeating unit including the alcoholic hydroxyl group relative to all repeating units in the resin substantially forming the shell layer is at least 0.1% by mass and no greater than 20% by mass.
Claims19
An electrostatic latent image developing toner comprising a plurality of toner particles each including a core containing a binder resin and a shell layer disposed over a surface of the core, wherein
- the core contains a polyester resin as the binder resin,
- the shell layer is substantially formed from a resin having at least one repeating unit derived from a styrene-based monomer, at least one repeating unit derived from (meth)acrylic acid ester, and at least one repeating unit including an alcoholic hydroxyl group, and
- a ratio of the repeating unit including the alcoholic hydroxyl group relative to all repeating units in the resin substantially forming the shell layer is at least 0.1% by mass and no greater than 20% by mass.
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Dependencies are inferred from the claim text.